Load Specifications
Load data in caliber 7 mm STW with .284 | 120gr | Barnes TTSX BT bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 59,219 psi | 89% | 3189 fps | 99.3% |
| Accurate 3100 | <<locked>> | 96% | 56,405 psi | 85% | 3182 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 58,726 psi | 88% | 3166 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,580 psi | 86% | 3235 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 59,669 psi | 89% | 3343 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 58,566 psi | 88% | 3209 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 58,929 psi | 88% | 3291 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 56,637 psi | 85% | 3281 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,018 psi | 63% | 3028 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 59,857 psi | 90% | 3228 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 59,959 psi | 90% | 3258 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 58,595 psi | 88% | 3301 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 60,292 psi | 90% | 3317 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 58,233 psi | 87% | 3274 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,391 psi | 85% | 3274 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 57,624 psi | 86% | 3258 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,229 psi | 80% | 3248 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 58,537 psi | 88% | 3346 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 59,379 psi | 89% | 3323 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 57,159 psi | 86% | 3189 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,269 psi | 74% | 3163 fps | 96.7% |
| Bofors RP5 | <<locked>> | 96% | 56,391 psi | 85% | 3274 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 60,089 psi | 90% | 3238 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,475 psi | 79% | 3192 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 57,493 psi | 86% | 3212 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 59,727 psi | 90% | 3294 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 58,523 psi | 88% | 3251 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 56,710 psi | 85% | 3222 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 59,379 psi | 89% | 3264 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 58,827 psi | 88% | 3212 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,127 psi | 78% | 3304 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 56,565 psi | 85% | 3261 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 55% | 2096 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,841 psi | 87% | 3189 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 58,175 psi | 87% | 3219 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,899 psi | 87% | 3209 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 57,841 psi | 87% | 3222 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,624 psi | 86% | 3205 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 58,421 psi | 88% | 3323 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 58,262 psi | 87% | 3179 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 58,479 psi | 88% | 3205 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 60,321 psi | 90% | 3251 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,592 psi | 80% | 3140 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 59,263 psi | 89% | 3238 fps | 100% |
| Norma 204 | <<locked>> | 90% | 59,625 psi | 89% | 3278 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 56,449 psi | 85% | 3301 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 59,785 psi | 90% | 3274 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 59,408 psi | 89% | 3346 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 58,871 psi | 88% | 3274 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 58,218 psi | 87% | 3271 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 56% | 2142 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,145 psi | 86% | 3192 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 59,596 psi | 89% | 3304 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,769 psi | 87% | 3255 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,376 psi | 85% | 3284 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,359 psi | 80% | 3304 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 59,988 psi | 90% | 3192 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 57,464 psi | 86% | 3189 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 59,988 psi | 90% | 3255 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 57,580 psi | 86% | 3258 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 60,089 psi | 90% | 3238 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 58,479 psi | 88% | 3205 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 58,262 psi | 87% | 3179 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 60,321 psi | 90% | 3251 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 59,451 psi | 89% | 3251 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,566 psi | 86% | 3064 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 58,015 psi | 87% | 3153 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,130 psi | 86% | 3255 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 57,029 psi | 85% | 3182 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 58,204 psi | 87% | 3179 fps | 97.3% |
| Somchem S365 | <<locked>> | 92% | 60,234 psi | 90% | 3274 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 58,262 psi | 87% | 3228 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 58,624 psi | 88% | 3153 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 58,015 psi | 87% | 3212 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,885 psi | 87% | 3202 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 59,277 psi | 89% | 3153 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 57,014 psi | 85% | 3209 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 59,596 psi | 89% | 3284 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,289 psi | 84% | 3291 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,057 psi | 84% | 3258 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 58,059 psi | 87% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 59,727 psi | 90% | 3294 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 60,089 psi | 90% | 3399 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 58,726 psi | 88% | 3228 fps | 98.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 55,376 psi | 83% | 3127 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 34,142 psi | 51% | 2733 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 55,013 psi | 82% | 3114 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 43,047 psi | 65% | 2976 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 51,445 psi | 77% | 3199 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,547 psi | 77% | 3094 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 44,570 psi | 67% | 3025 fps | 95.9% |
| ADI AR 2213 | 76.9 gr | 92% | 49,197 psi | 74% | 3143 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 36,651 psi | 55% | 2884 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,663 psi | 79% | 3120 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 56,028 psi | 84% | 3196 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,481 psi | 62% | 2992 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,298 psi | 72% | 3127 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 44,469 psi | 67% | 3015 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 42,496 psi | 64% | 3005 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,589 psi | 46% | 2707 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,793 psi | 49% | 2779 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,533 psi | 50% | 2835 fps | 96.3% |
| Bofors RP15 | <<locked>> | 90% | 42,090 psi | 63% | 2992 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 53,505 psi | 80% | 3133 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 45,716 psi | 69% | 3091 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 42,496 psi | 64% | 3005 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 46,282 psi | 69% | 2995 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 96% | 45,266 psi | 68% | 3048 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 53,650 psi | 80% | 3150 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 45,223 psi | 68% | 3035 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 47,877 psi | 72% | 3061 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 90% | 49,139 psi | 74% | 3084 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,692 psi | 77% | 3133 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,044 psi | 59% | 2867 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 42,206 psi | 63% | 3081 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,817 psi | 67% | 3048 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 41% | 1880 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,230 psi | 81% | 3133 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,916 psi | 63% | 2913 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,718 psi | 72% | 3025 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 41,162 psi | 62% | 2920 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,546 psi | 76% | 3084 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 92% | 47,123 psi | 71% | 3114 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 54,447 psi | 82% | 3120 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,179 psi | 68% | 2969 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 43,439 psi | 65% | 2946 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 35,679 psi | 53% | 2776 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 55,361 psi | 83% | 3179 fps | 100% |
| Norma 204 | <<locked>> | 82% | 44,962 psi | 67% | 3009 fps | 95.8% |
| Norma MRP | 72.5 gr | 84% | 38,899 psi | 58% | 2949 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 42,525 psi | 64% | 2969 fps | 99% |
| Ramshot Grand | <<locked>> | 92% | 47,268 psi | 71% | 3123 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 41,582 psi | 62% | 2953 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 90% | 39,073 psi | 59% | 2907 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,833 psi | 42% | 1923 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,461 psi | 80% | 3130 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,372 psi | 77% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,308 psi | 65% | 2999 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,843 psi | 63% | 3009 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 39,102 psi | 59% | 2986 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 56,275 psi | 84% | 3140 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 50,125 psi | 75% | 3071 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 46,035 psi | 69% | 3005 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 43,714 psi | 66% | 2999 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 46,282 psi | 69% | 2995 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,179 psi | 68% | 2969 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 54,447 psi | 82% | 3120 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,439 psi | 65% | 2946 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,880 psi | 78% | 3133 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,531 psi | 76% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,309 psi | 66% | 2910 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 43,337 psi | 65% | 2992 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 50,140 psi | 75% | 3071 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 50,734 psi | 76% | 3051 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 39,378 psi | 59% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,464 psi | 58% | 2844 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 47,993 psi | 72% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,976 psi | 66% | 2969 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 41,089 psi | 62% | 2894 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 55,463 psi | 83% | 3097 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 43,511 psi | 65% | 2966 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 34,171 psi | 51% | 2792 fps | 97.4% |
| Vihtavuori N560 | 77.6 gr | 90% | 48,602 psi | 73% | 3146 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 48,515 psi | 73% | 3120 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,511 psi | 65% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,223 psi | 68% | 3035 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,093 psi | 41% | 2674 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 43,859 psi | 66% | 2959 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 91 powders for 7 mm STW loaded with the .284 | 120gr | Barnes TTSX BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,399 fps; across all powders the maximum-charge window runs from 2,096 fps to 3,399 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for 7 mm STW with the .284 | 120gr | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Norma 217, ReloadSwiss RS 80 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.